Attxiliaby tbawsmissioit fob mqtob cass



H. E. BARNETT AUILIARY TRANSMISSION FOR MOTOR CARS i Filed se 10, 1924 1' i "B 13 Hmly E.' Balme tt,

btoz nag Patented Dec. 16, i924.

UNITED STATES HENRY E. BARNETT, Oli SUMMXT, MSSISSIPPI.

AUXILIAR?! TRANSJHSSIGN FR MDTOR Application led September 1G. 1924i..

To al whom t may concern.'

Be it known that l. HENRY E. ginvu'r'r. a citizen ot the United States. residing' at Summit. in the county ot lilfe and @tate oit Mississippi. have invented certain new and useful linprovements in ,auxiliary Trans missions for Motor (lars. of which the tollowingr is a specification.

The invention has tor an object to provide an improved construction. in ausiliariY transmissions by which motor vehicles with a `given` style of transmission may he converted to heavieiI duty types. or adapted hotter to the hauling); ot heavier loals than normal. while at thc same time retainingl` the advantages of' equally hipgh speeds as before when running' light.

It is a frequent experience in such vehidesespecially trucl s-that the traction thrust communicated through housings causes breakage of the hanger arms by which the motor is mounted in the chassis trame.. and it is a special object ot' this invention to minimize the liability of such breakage while still providing a close couplint),` between the auxiliary device and the regular structure. causing' the auxiliary device to sustain the thrust larn'ely. although permitting); partial support ot excess thrust by the usual supports. At the saine time it is sought to avoid the use ot special or very heavy castings or other extreme wei ,Qjht in mounting` since-the vehicle having been already designed 'For a given weigh t ol powe and transmission plant. avoidance oli even small excesses oit wcirrht is important.

Tt is a specific purpose to present a novel junction between a regular power and transmission plant ot a well known type. and the auxiliary. whereby a certain play is permitted. yet coaction provided in a proper degree.

A further important purpose is to enable the use of stock parts now tamiliar and ordinarily associated in one vehicle tor the complete assemblage ot the transmission and casings; and requiring" no modified manufacture in. the plant on which the auxiliary is to be installed. as wel] as enabling the use of a stool( transmission oi: familiar toi-m unchanged as the auxiliary. l

In the use of motor vehicles it has been found that breakages frequently occur by reason of springing` ot' framing.. or by reason of variation from standard in manufacture or assemblage ot parte, which variations are Serial No. 736,937,

practically unavoidable. For instance, it parts are not accurately alined in drill presses the positions or holes may he such that more than the allowed stress is conr mnnicated to certain parts; also. variations from standard ot cutting` tools may result in surfaces not .in the planes provided for in the controlling` design. These will not prevent the assemblage of a machine. and may never have an ill effect. but when a number of variations occur lin a sequence contributing' to the same fault iu transmission of stresses, and an exceptional demand on the machine occurs they mav be conceived as causes for fractures. Mv invention provides a compensation tor such l'aults by which liability ot' failure is minimized.

Additional objects. advantages and 'teas tures ot invention reside in the construction, arrangement and combination and coactive relation of parts as will be more readily understood from the 'following' description and acccmpanyingidrawings, in which- Figure l is a traumentary top view of a motor vehicle chassis. frame power-trans mission plant. and drive. the transmission cover and lever being: removed.

Figure 2 is a `trout elevation thereot. VLA/ure 3 a rear view.

Figure 4 is a side elevation thereoi There is illustrated a portion of a chassis trame l0 ot a motor vehicle.y the parts et this trame shown being; thn channel side members. There is shown also'n the rear ex tremity l!V oi a combined power and transmission plant ol a familiar type now largely used. this comprisinsy a casing' ,1.2 which is usually so constructed and connected to the running' gear as to receive the thrust from the tractive action of the rear wheels of the vehicle on which it is employed. and being' mounted by hanger arms not shown, and otherwise so as to transmit this thrust to the frame 10, these details of mounting; being generally tamiliar. A power shaft 13 is also shown in the casing 1% which delivers the power to the motor. a speed change 2o fearingr `not shown beine incorporated in the plant ordinarily. although this is not essential to the prese-nt invention. The shaitt- 13 is*in the particular vehicle indicatedm known as the shaft ot the driving plate ot the transmission in the case l2, which transmission may be referred to as the) primary transmission. l

A, transmiffrision l5 is' disposed rearwardly ooltl Vigni ere t.

,he bonfen e. ser

n own inch eremiti i nel Corel' n J l r converting rnei el ted, mond ene renlber n 6 il of gee lle 1n the ease which J.' non r tion is infstarlle(l the detalle of able that the power delwerj/ shalt 2() el relay bleh erf J. il, torni l The transmission rrern rtter reeultn lelnthng 5 'mnlller mounted, Wh

i? th e nreeent lnx both on the szune axis, Cem

rmlennsslen indie eeto transmission, the number plled by the nu e prlmary transmissie 2, i .neh e.

el part o Whlle 1t 1s deslr .genre @1 cl'ng three speeds formt lf) 'in one Cllr in th prise no nm shall have a forward mit 19 and e. rear Dower sentlal.

a particular erse may be produced the shalt speed.

ene

inl:

. y... re conchd 'LMC e or in place power nd smisslm one wlnch 1s added to nte e beamer and also .In lf Serv Wi tran lnovfennen;

1e ventral eil to carry.

th the regl' t lullv.

left e le, Q; eronml tV ell?.

'reln was'wn und 1n sdfhuen 1 .j lun in addition nlsslon Wlth the l! grne to move heevler leeds fleslen to eet thatv whe l prim sl lie ern,y

preotwe s e l! n'eetl: l'

es speeiel advantage 'For 1n lehed pl le.

elop give.-. @Wer peril than normal because of vlne enf 1e ense shocks 1 original ing or the eng,

11.0' for it tl onrnes Y is the resilient the Cese 1G relativ/ely te the cese l2.

nene ere thereby attained by the one element 1n en extremely snnple and lnl1@ expenswe i enner.

y Whleh 1s meant ly JL'.

o rute pee oil i' quiete any .we nst nre becomes nece ztl wo casinos.

h l i e regular tran of enabhng the en genera fre 1t sels to dy roads. lt

n eli-pz le? Olil fll'ls p nmllv eral fune l. ret'.

rlhe

motell vehicle then the no1 nele reen* dw( hz' nnte all.

nncl the 1 Vhe it the nen ,Ll mae eh. thrust @rive 'ouffh dit l e (l re nnlxv rse.

strep a cl ormed Inu enlne left at tnnes. lose bolt Wl .l l on, socket fitr en Cese art of A bnl" zlo),

1 e shz vehlele 1 rwar ed, an

ede nbly uppzn'tefl ('ls of a sides ng o1 should be n he sl ball whl lrv 1 S Of lll een il'rarne.

nsrnss eh eitenf'is n. (lure eno. e

the nssel passed beneath the turecl at 9 and it Within permitting the l ly thereln inch thick, snel bolt 10W Inoul all thrus :L stoel;

nxed von 'th nt the top dry 'for the fo- .iop ol' the Oll Vflll.

al joint 'ft to be sq e elelne ame l() 'enslnts the tract le thr ll thrust socket.

ro1n the .livers efore both be 1n akrnz:

l) ed, to recelve a. clre elt el et the` rear of the tr ion euse l the Correeponfli proper ace le l werd nd ol' the Cese l2 is e resxhent plete 25., Whiell l one-slxteenth) the nlployecl to ho S bein ern] o r zu:

ln the partcula she. nnelil ther lts,

lies he 'fr Xls of the shafts 19---20 the s, and

for

orlnecl of stoel; sheet steel benl pheri to nt f 'nugly .he sh"L that 1 .5 advance of the shaft 19 ter to shcle ense l2 b cnetonnuly e versal b ttne;

herebw' held. f

n the ren.

unlversa 1 the cl ered ple. he etly l Wlth the a tence below lnenlbe ense 1G, belng el spi The rear een the

ls t

ouston mated olf nn] I'UT l strep El is secured slce In ordinal? .le low senn'fs 28 the pertleule 1s well known. fr

is treu env us respective jolnt may re e0 3 ions require this increased trat-ti rc capacity, here 1s a high percerm of breakage ot "fh which isnntted,

is and other parts thi/o1 from the i Y and my inrenti mi e if not eliin- 1 .te i lial i lt a further advanniy invention that it enables the use lly michanged as Yilinry transv ns of standproduced as auxiliary devices. This nialres it possible to and use the Atransmission from vehicles which here been discard unserriceable in other yartr;n find es these are available e mnnl'iers at we y low e, my torni broiiight within ..1 et a reali y who could not a'l'ii'ord the cost ere special adaptii case and connecting); parts are required.

l claim:

l. lin a motor ivchicle transmission, a motor-carrying freine, a motor eleinent .including` a reyoluble power shaft7V a speed-changing derice including a case movable by' excessive ynfessure relatively to said frame longitudinally of the shaft, said speed-changing device including also a power receiving shaft and a power transmitting shaft adapted to be coupled to a final drive, said speed changing device including a mounting separate from the motor frame, said power receiving shaft haring an extensible and contractible connection with said power shaft.

The structure opt claim l, in which a resilient con'iln'ession element is interposed between the mounting` of said speed change gearing and inotor eienients whereby encessire thrust force acting between the speedchanging device and the motor carrying frame will be cushioned.

f5. In a inotor vehicle transmissionl a yehicle frame? a power and primary drive mechanism thereon including a housing part and a power shaft extended rearwardly therein, and having a resilient closure plate across the rear part thereof, a speed-changing gearing including1 a housing separately mounted on the frame, and having a powerreceiying shaft projected from the forward side of the last named housing, engaged revolubly througl'i said plate and having an extensible and contractible connection with the power shaft7 an element on the second housing engaging centrally of said plate7 said speed changing gearing having a power transmitting shaft projected rearwardly therefrom and said last-narned housing being constructed for connection with a traction-thrust housing.

il. The article of claim 3 in which the second named housing includes in its mounting diagonal braces in a plane with the mean line of thrust from the traction-thrust housing.

5. The article of claim 3 wherein the en gagement between the second named housing and said plate includes a packing conlined between the two, whereby thrust force cornmunicated by the second named housing to the first named housing will be cushioned, and retention of grease and oil is effected in the one element.

6. The article of claim 3 in which the mounting of the second named housing is adapted to yield to excess thrust stresses whereby such excess is transmitted to the mounting of the first named frame.

In testimony whereof I affix my signature.

HENRY E. BARNETT. 

